Rohde & Schwarz SGS100A - Page 315

Telnet program examples
R&S
®
SGS100A
313User Manual 1173.9105.02 ─ 12
~TcpClient();
void connectToServer( string &hostname, int port );
void disconnect( );
void transmit( string &txString );
void receive( string &rxString );
string getCurrentHostName( ) const;
int getCurrentPort( ) const;
private:
string currentHostName;
int currentPort;
int currentSocketDescr;
SockAddrStruct serverAddress;
HostInfoStruct * currentHostInfo;
bool clientIsConnected;
int receiveBufferSize;
};
#include <netdb.h>
#include <netinet/in.h>
#include <unistd.h>
#include "TcpClient.h"
TcpClient::TcpClient()
: currentHostName( "" )
, currentPort( 0 )
, currentSocketDescr( 0 )
, serverAddress ( )
, currentHostInfo( NULL )
, clientIsConnected( false )
, receiveBufferSize( 1024 )
{
}
TcpClient::~TcpClient()
{
currentHostInfo = NULL;
}
void TcpClient::connectToServer( string &hostname, int port )
{
currentHostInfo = gethostbyname( hostname.c_str( ) );
if( currentHostInfo == NULL )
{
currentHostName = "";
currentPort = 0;
currentHostInfo = NULL;
clientIsConnected = false;
printf("error connecting host\n" );
}
currentHostName = hostname;
currentPort = port;
currentSocketDescr = socket(AF_INET, SOCK_STREAM, 0);